[Gong, Shuqing] Changsha Univ Sci & Technol, Sch Math & Stat, Changsha 410114, Peoples R China.
[Guo, Zhenyuan; Guo, ZY] Hunan Univ, Sch Math, Changsha 410082, Hunan, Peoples R China.
[Liu, Min] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China.
[Wen, Shiping] Univ Technol Sydney, Fac Engn & Informat Technol, Ctr Artificial Intelligence, Ultimo, NSW 2007, Australia.
[Huang, Tingwen] Texas A&M Univ Qatar, Sci Program, Doha, Qatar.